<h3>Multiple Languages</h3>
<div class="btn-group">
  <button type="button" class="btn btn-default" (click)="changeLanguage('en')">English</button>
  <button type="button" class="btn btn-default" (click)="changeLanguage('sp')">Español</button>
  <button type="button" class="btn btn-default" (click)="changeLanguage('ch')">中文</button>
</div>
<formio src="https://examples.form.io/example" [language]="language" [options]="options"></formio>
